Google Play rank_change climbers via get_top_trends

Google Play rank_change on Trends MCP is get_top_trends with type Google Play, sort rank_change, and a window such as 1d. From the August 27, 2026 pull, the board stamped 2026-08-27T06:01:38 UTC. The 1d window used baseline 2026-08-26T02:01:36 UTC and returned count 1. YouTube Music sat at rank 150, prev_rank 151, rank_change 1. The 3d window returned the same single row. The 7d window used baseline 2026-08-20T02:01:39 UTC and returned 41 climbers. SHEIN-Shopping Online led that list at rank 102, prev_rank 111, rank_change 9. Default sort rank filled 200 apps, then count 0 at offset 200. Free tier access is 100 requests per month.

Google Play 1d returned 1 climber while 7d returned 41

From the Trends MCP scan of August 27, 2026, Google Play sort rank_change stamped 2026-08-27T06:01:38 UTC and filled 1 climber row on window 1d, 1 on 3d, 41 on 7d, 41 on 14d, and 41 on 30d, so a default sort rank pull at limit 25 never lists these mover fields.

Shared as_of 2026-08-27T06:01:38 UTC:

Default sort rank on the same stamp filled 50 rows at offsets 0, 50, 100, and 150, then count 0 at offset 200. Rank 1 was WhatsApp Messenger. Rank 2 Facebook. Rank 3 YouTube. Rank 11 ChatGPT. YouTube Music appeared twice on that board, at 150 and 151. The only 1d climber is that duplicate pair swapping one slot. Offset 25 on the 1d list was unnecessary: count already closed at 1.

Same-stamp Google Trends 1d returned count 11, led by jelly roll at rank 32, prev_rank 135, rank_change 103. Wikipedia Trending 1d returned count 12, led by Buddy (2026 film) at rank 69, prev_rank 188, rank_change 119. App Store Top Free on 2026-08-27T04:01:37 UTC, a different clock, listed ChatGPT at rank 1. ChatGPT sat at Google Play 11 and was absent from the 1d, 3d, and 7d climber lists.

The free Google Play trends API page still describes a 25-row scan from August 6, 2026. This pull closed at 200.

Exact API calls for climber boards

sort rank_change plus window is a separate get_top_trends request from default sort rank, so a 1d climber pull and a current-rank pull on August 27, 2026 are two requests, and each extra window is another request because window is per call.

{
  "mode": "get_top_trends",
  "type": "Google Play",
  "sort": "rank_change",
  "window": "1d",
  "limit": 50
}

{
  "mode": "get_top_trends",
  "type": "Google Play",
  "sort": "rank_change",
  "window": "7d",
  "limit": 50
}

{
  "mode": "get_top_trends",
  "type": "Google Play",
  "limit": 50,
  "offset": 0
}

MCP clients send the same fields on get_top_trends. 7d at limit 25 returned 25 rows, then offset 25 returned 16, for a closed climber list of 41. 14d and 30d repeated that 25-plus-16 split with the same objects. Offset and limit behavior is on get_top_trends pagination. For the Google Trends sibling, see Google Trends rank_change. The iOS free-chart sibling is App Store Top Free rank_change. For a current-rank join against Google Trends, see Google Play vs Google Trends.

7d, 14d, and 30d returned the same 41 objects

A longer window did not invent new Google Play climbers on this stamp. The 7d, 14d, and 30d responses shared rank, keyword, prev_rank, and rank_change for every row, even though their baseline_ts values differed by weeks.

The largest 7d move was 9 ranks. Most of the 41 rows moved 1 or 2 slots. That is a sticky global chart, not a turnover board. Instagram appeared on Wikipedia Trending 1d at rank 185, prev_rank 186, rank_change 1, and sat at Google Play 4 without entering the Play climber list. google docs sat at Google Trends 30 and had no Play display-name match in 200; Microsoft Word sat at Play 53.

YouTube Music climbed 1 rank with falling Android downloads

Live Google Play rank, sort rank_change, and get_growth on app downloads are three different signals, and YouTube Music shows why: it was the only 1d climber while Android volume fell.

Growth follow-ups on the same pull day used source google search (weekly points, recent_date 2026-08-22 unless noted) and source app downloads (recent_date 2026-08-26). Quote volume when baseline_value is 0.0. Do not reprint growth 999999.0.

YouTube Music gained one Play chart slot while app downloads volume fell 24.93% over 7 days from 18,885,197 to 14,177,047. SHEIN led the 7d climber list while google search sat at 45.0, down 6.25% over 7 days. WhatsApp held Play rank 1, was not a climber, and still printed 7,273,475 estimated Android downloads on 2026-08-26. ChatGPT Android 30D, WhatsApp Android 30D, and YouTube Music Android 30D all used baseline_value 0.0. Omit those dummy percents. Bundle IDs belong on source app downloads. Display names belong on the Google Play board.